diff options
| author |   Prabhakar Kushwaha <pkushwaha@marvell.com> | 2020-01-25 03:37:29 +0000 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2020-01-29 21:02:15 -0700 |
| commit | 10a663a1b15134a5a714aa515e11425a44d4fdf7 (patch) | |
| tree | 77316510d102f161fc28e2cb08732744ffb9262f /drivers/ata/ahci.c | |
| parent | pata_pcmia: add SanDisk High (>8G) CF card to supported list (diff) | |
| download | linux-dev-10a663a1b15134a5a714aa515e11425a44d4fdf7.tar.xz linux-dev-10a663a1b15134a5a714aa515e11425a44d4fdf7.zip | |
ata: ahci: Add shutdown to freeze hardware resources of ahci
device_shutdown() called from reboot or power_shutdown expect
all devices to be shutdown. Same is true for even ahci pci driver.
As no ahci shutdown function is implemented, the ata subsystem
always remains alive with DMA & interrupt support. File system
related calls should not be honored after device_shutdown().
So defining ahci pci driver shutdown to freeze hardware (mask
interrupt, stop DMA engine and free DMA resources).
Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/ata/ahci.c')
| -rw-r--r-- | drivers/ata/ahci.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 4bfd1b14b390..11ea1aff40db 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -81,6 +81,7 @@ enum board_ids { static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent); static void ahci_remove_one(struct pci_dev *dev); +static void ahci_shutdown_one(struct pci_dev *dev); static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class, unsigned long deadline); static int ahci_avn_hardreset(struct ata_link *link, unsigned int *class, @@ -606,6 +607,7 @@ static struct pci_driver ahci_pci_driver = { .id_table = ahci_pci_tbl, .probe = ahci_init_one, .remove = ahci_remove_one, + .shutdown = ahci_shutdown_one, .driver = { .pm = &ahci_pci_pm_ops, }, @@ -1877,6 +1879,11 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) return 0; } +static void ahci_shutdown_one(struct pci_dev *pdev) +{ + ata_pci_shutdown_one(pdev); +} + static void ahci_remove_one(struct pci_dev *pdev) { pm_runtime_get_noresume(&pdev->dev); |